Anthropic Adds Cross-Session Messaging to Claude Code

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- Anthropic announced a feature that allows different Claude Code sessions to message each other with updates and other information.
- The cross-session messaging capability is available to users running the latest version of Claude Code on macOS and Linux.
Why it matters: Developers juggling multiple Claude Code sessions on macOS or Linux now have a native way to relay updates between them, reducing manual copy-paste across terminals in the same workflow.
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